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EXHIBIT A - SCOPE OF WORK <br /> Maple Heights Bridge Seismic Retrofit <br /> Description <br /> This PROJECT will determine the seismic vulnerability of the existing Maple Heights Bridge and <br /> will provide targeted retrofit solutions that will be developed into Plans, Specifications, and <br /> Estimates (PS&E)for advertising for construction. <br /> Introduction <br /> The CITY of Everett (CITY) has retained TranTech Engineering, LLC (CONSULTANT) to provide a <br /> complete PS&E package for the Maple Heights Bridge Seismic Retrofit (PROJECT) in Everett, <br /> Washington. The following describes the Scope of Work (SCOPE) for this project. <br /> The Maple Heights Bridge was constructed in 1979 in an area of King County that is now the <br /> south end of the City of Everett and just north of the City of Mukilteo.The 3-span bridge is <br /> approximately 51 feet wide out-to-out and 303 feet long (97.5':110':95.5'). Its superstructure is <br /> composed of reinforced concrete pre-stressed girders made composite with a 7.5" thick <br /> concrete deck slab. Its substructure is composed of concrete abutments and multi-column <br /> intermediate piers founded on shallow spread footing foundations. At both abutments, <br /> elastomeric pad bearings are supporting the superstructure and is utilized as part of the <br /> bridge's expansion joint system on its west abutment. The bridge carries two lanes of traffic <br /> with a 5' wide sidewalk on each side. <br /> The first step in the project is to perform a seismic vulnerability assessment of the bridge and <br /> prepare a Concept Design Report (CDR) that documents the seismic retrofit solutions for the <br /> bridge and associated preliminary cost estimates. Determination of the seismic vulnerability of <br /> the bridge and the appropriate retrofit solutions will be performed using detailed structural <br /> analysis and engineering judgment. Conceptual level cost estimates will be based on available <br /> cost data for similar work with site-specific input related to accessibility and constructability. <br /> The development of the CDR will lead to the development of PS&E for the selected alternative. <br /> Anticipated design services include survey and base mapping, geotechnical, environmental <br /> documentation/permitting, and if desired by the City, utility coordination, public involvement, <br /> and design and construction management support during construction phase. Construction <br /> phase services is anticipated as a future supplement to this SCOPE. <br /> Maple Heights Bridge Seismic Retrofit 1 <br />